Heat insulating unit for substrate processing apparatus



FIG. 1 is a front and top perspective view of a heat insulating unit for substrate processing apparatus showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view. 

CLAIM We claim the ornamental design for a heat insulating unit for substrate processing apparatus, as shown (and described). 